Spring-hinge.



Patented Sept. I8, |900..

W. GEBWIEN.

SPRING HINGE.

(Application filed Mar. 2, 1899. Renewed Feb. 10, 1900.)

2 Sheets-Sheet 2.

(No Model.)

Nuvi' NITED STATES PATENT Fries.

WILLIAM GERWIEN, OF CHICAGO, ILLINOIS.

sPRlNc-'l-HNGE.

SPECIFICATION forming part of Letters Patent No. 657,982, eatenseptember 1s, ieoo.y

Application iled March 2, 1899. Renewed February l0, 1900. Serial No.4,823. (No model.)

To @ZZ whom it may concern:

Be it known that I, WILLIAM GERWIEN, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented certain new and useful Improvements in Spring-Hinges; and I dohereby declare the following to be a full, clear, and exact descriptionof the invention, such as will enable others skilled in the art to whichit appertains to make and use the same.

This invention relates more especially to improvements in that class ofspring-hinges that are termed double-acting and adapted for use inhanging doors that are capable of being opened in either direction froma common xed center.

The object is to 4provide a device of this character that is simple inits construction, possessing great durability, not liable to get out oforder, and to retain the door and jamb in their proper relative positionwith but little liabilityof being affected by constant use or from othercauses.

Figure l shows a door and hinge in their closed position. Fig. 2 showsthe same in their open position. Fig. 3 is a vertical section throughthe door and jarnb on line 3, Fig. 5, looking in the direction indicatedby the arrow. Fig. l is a horizontal plan section on line 4, Figs. 2 and3. Fig. 5 is a itransverse section on linel 5, Fig. 3;, and Fig. 6 is adetached detail of construction.

A may represent the broken-away part of a door, and A' the correspondingjamb part, to which the respective leaves of the hinge are attached. Thestationary hinge-leaf B is rigidly secured to the jamb and the companionstationary leaf B rigidly secured to the door. At their upper ends thesecompanion hinge-leaves are connected by the intermediate movablehinge-plate B2 and at their lower ends by the movable hinge-plate B2,which is the usualarrangement. In the present invention, however, thehinge-plates B2 B3 are of a concave-convex shape, the object of whichwill be hereinafter described.

The jamb hinge-leaf B is provided between its respective ends with thecylindrical case B4, inclosing the torsion-spring O. The upper end ofthis spring-case is closed by a hub C and the lower end by acorresponding hub O2. vThe respective ends of the torsion-spring'erative connection.

are secured in the companion hubs, as at ct, and when the door is openedin either direction the tension acts to automatically close` the same. Arod O2 passes longitudinally through the open space in the center of thetension-spring and has the companion hubs mounted on the respective endsthereof, which forms a common connection therebetween and serves to holdthe same in exact alinement. The free ends of the rod O3stop short at apoint just outside of the hubs and provide for the connection of theoperatingiarms.

One end of an arm D is mounted on the upper end of the rod` O3. Theconnecting hinge-plate B2 is provided on the convex side and lower endwith a boss a', to which is attached one end ofva common `link D by apivot-pin ct2,'which is in the vertical center of the hinge-plate B2.The free end of this link is pivoted to the free end of the arm D, as ata2, Fig. 6, and forms the necessary op- The arm D is provided with a lugCL4, Fig. 6, through which is inserted a pin a5, adapted to engage withany one of a number of holesa, formed in the hub C', by whicharrangement the tension of the torsion-spring is regulated and operativeconnection between said hub and the arm D is made.

The hinge-plate B2 vpivotally connects the door and jamb leaves at theirupper ends. The pintle a7 forms the pivoted connection with the doorhinge-leaf and the pintle aswith the jamb hinge-leaf. When the door isswung open in the direction shown in Fig. 2, the connecting hinge-plateB2 remains stationary against the j amb,as the door hinge-leaf swings onthe pintle a7. There being no movement of the connecting hinge-plate,the hub C and the connecting-arm D and link D also remain stationary,the torsion-spring being twisted at the lower end. In this position theconvex side b of the hinge-plate B2 is outward. When the door is swungin the opposite direction, the hinge-plate B2 follows the movement ofthe door and turns on the pintle as, which is on the opposite side ofthe door from that of the pintle a7, the hub C and its connecting` armand link moving at the same time and twisting the spring from the upperend.

The construction and arrangement of the lower hinge connections are thesame as the IOO e Genese i Corresponding upper parts and may bedescribed as follows: One end of an arm D2 is mounted on the lower endof the hub connectinglrod C3. To the free end of this arm is pivotallyconnected one end of a link D3, the opposite end lof which, Fig. 4E,connects with a pivot-pin inserted in the boss b2, formed on the convexside and upper end of the connecting hinge-plate B3. In this openingmovement of the door, Figs. 2 and 4, the lower hinge-plate B3 followsthe movement of the door` and presents the concave side b3 outwardly,the boss b2 on the convex side filling into the recess b4 in thehinge-leaf B. Opening in the direction shown, the connecting hinge-plateB3 turns on the pintle b5, and opening in the opposite direction thehingeplate B3 remains stationary against the jamb, the hinge-leaf:` B'turning on the pintle bs.

The arrangement of the connecting hingeplates is such that they have analternate action or movement, so that the relative position of the sameis reversed in accordance with the direction in which the door is swung,the moving hinge-plate acting on the spring, storing up the powernecessary in automatically closing the door. By having the connectinghinge-plates of a concavo-conveX shape it is possible to make theconnecting arms and links the same length and the pivotal centers thesame distance' apart, so that when the door is closed the joining endsof the connecting lever-arms and links are all in alinement with thehinge-knuckles and present the finished appearance of Ithe same, beingmounted on the pintles connecting the hinges.

The hinge-leaves B B are provided on opposite sides, top and bottom,with lugs d cl2- that is, two on each side ofthe door, the tWo on thesaine side being in a diagonal plane and having frictional contact withthe knuckles (Z3 on the connecting hinge-plates B2 B3 and forming a stopor checkin preventing the door from swinging too freely back and forthwhen allowed to fly shut. These lugs will also or-` i dinarily preventthe doors from being opened by the action of the wind.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, isL

1. In a spring-hinge, the combination of the companion hinge#leaves, theconnecting hingeplates, of a concavo-convex shape, the tensionispring,the connecting-arms, and the connecting-links, said arms and links be'-ing of the same length, the links connecting with said hingeplates on aline through the vertical center thereof.

2. In a spring-hinge, the combination with a tension-spring, of acase,inclosing the same, the companion hubs, loosely inserted in therespective ends of said case, the rod connecting said hubs and havingyits free ends stop short outside thereof, the arms connecting with theprojecting ends of said rod, the connecting-links, and theconcave-convex hinge plates.

3. In a spring-hinge, the combination with the hinge-leaves, of theconnecting concavoconvex hinge-plates, the links pivoted to 'said plateson a line through their vertical center, the arms, connecting with thefree end ot' the links, the rod, on which the opposite ends of said armsare mounted, the tension hubs mounted on the respective ends of saidrod, the case wherein are seated the reduced ends of said hubs and thetension-spring, inclosed therein having its respective ends secured inthe tension-hubs.

4. In a spring-hinge, the door and jamb leaves provided on oppositesides with projecting lugs adapted to check any unnecessary swaying ofthe door. l

In testimony whereof I afX my signature in presence of two witnesses.

WILLIAM GERWIEN.

Witnesses:

L. M. FREEMAN, L. B. GOUPLANDI

